This table is fantastic. Thank you.
My back of the envelope calculations:
Q1xx is slightly larger than a Smokey Joe in cooking size
Q2xx is about the size of an 18.5 cooker
Q3xx is about the size of a 22.5 cook surface.
Size wise for cooking (at small size) - Go Anywhere > Smokey joe > Q100/120/1000/1200 > Jumbo Joe/18.5" weber > Q200/2000 series